Same current is flowing in two different A.C. | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) In an $A.C.$ circuit containing only an inductor, the inductive reactance is given by $X_L = 2\pi fL$. The current is $I = V / X_L = V / (2\pi fL)

Vedclass · Accepted Answer

decrease in first circuit and increase in second.

Vedclass · Answer

(D) In an $A.C.$ circuit containing only an inductor, the inductive reactance is given by $X_L = 2\pi fL$. The current is $I = V / X_L = V / (2\pi fL)$. As frequency $f$ increases, $X_L$ increases, so the current $I$ decreases.In an $A.C.$ circuit containing only a capacitor, the capacitive reactance is given by $X_C = 1 / (2\pi fC)$. The current is $I = V / X_C = V \cdot (2\pi fC)$. As frequency $f$ increases, $X_C$ decreases, so the current $I$ increases.Therefore, the current decreases in the first circuit and increases in the second circuit.

Same current is flowing in two different $A.C.$ circuits. The first circuit contains only an inductance $(L)$ and the second contains only a capacitance $(C)$. If the frequency of the $A.C.$ source is increased in both circuits, what will happen to the current?

Similar Questions

When an $A$.$C$. source is connected across a pure capacitor,the correct phase relation between current $(i_c)$ and voltage $(e_c)$ is shown in the figure.

The current flowing in a coil is $3 \text{ A}$ and the power consumed is $108 \text{ W}$. If the a.c. source is of $120 \text{ V}, 50 \text{ Hz}$,the resistance in the circuit is (in $Omega$)

In a purely inductive circuit,the current is

Explain the representation of $AC$ current and voltage by rotating vectors.

An $A.C.$ source is connected to a resistive circuit. Which of the following is true?

Vedclass Test Series

Exam Paper Generator

Online Exam Module